linux-kernel - Re: [PATCH] gpiolib: Fix irq_domain resource tracking for gpiochip_irqchip_add

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Message-ID: <CACRpkdbkzAmwgzfL=dkHCynPFvYP-5Fcp4qQiBfbZ4649Ntn+A@mail.gmail.com>
Date:   Fri, 16 Jun 2023 15:07:39 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Michael Walle <mwalle@...nel.org>
Cc:     Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Shevchenko <andy@...nel.org>, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jiawen Wu <jiawenwu@...stnetic.com>
Subject: Re: [PATCH] gpiolib: Fix irq_domain resource tracking for gpiochip_irqchip_add_domain()

On Fri, Jun 16, 2023 at 9:30 AM Michael Walle <mwalle@...nel.org> wrote:

> Up until commit 6a45b0e2589f ("gpiolib: Introduce
> gpiochip_irqchip_add_domain()") all irq_domains were allocated
> by gpiolib itself and thus gpiolib also takes care of freeing it.
>
> With gpiochip_irqchip_add_domain() a user of gpiolib can associate an
> irq_domain with the gpio_chip. This irq_domain is not managed by
> gpiolib and therefore must not be freed by gpiolib.
>
> Fixes: 6a45b0e2589f ("gpiolib: Introduce gpiochip_irqchip_add_domain()")
> Reported-by: Jiawen Wu <jiawenwu@...stnetic.com>
> Signed-off-by: Michael Walle <mwalle@...nel.org>

Oh right.

I guess we can't devres it some way...
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij